The Senior Frontend React Developer will build scalable frontend applications using React and Next.js, develop design systems, and enhance e-commerce experiences.
Job Summary:
We are looking for an experienced Senior Frontend React Developer to join our growing team in Toronto. This role plays a critical part in building a robust, scalable, and personalized frontend for cutting-edge e-commerce applications using React.js and Next.js. The successful candidate will take ownership of both the design system development and micro-frontend architecture, contributing to a modular, maintainable, and high-performing user experience.
You will work closely with product designers, architects, and backend teams to develop a modern digital experience integrated with personalization platforms and headless CMS tools like Uniform, ContentStack, and CommerceTools.
Key Responsibilities:
- Build and maintain scalable and high-performance frontend applications using React, Next.js, JavaScript, and TypeScript.
- Develop a comprehensive design system, including reusable UI components, style guides, and clear documentation.
- Implement micro-frontend architecture for key e-commerce modules such as product display, checkout, and account management.
- Integrate with CMS platforms and personalization engines to deliver tailored user experiences.
- Optimize application performance, accessibility, and responsiveness across various devices and browsers.
- Set up and manage CI/CD pipelines using GitLab, GitHub Actions, or Jenkins.
- Deploy applications efficiently to AWS services, including Lambda and Amplify.
- Write and maintain unit, integration, and contract tests using Jest, React Testing Library, and Pact.
- Collaborate with cross-functional teams including UI/UX, QA, architecture, and product.
- Mentor junior developers and conduct thorough code reviews.
- Continuously improve the codebase by adhering to best practices and staying current with frontend trends.
- 5+ years of frontend development experience with strong expertise in React.js.
- Proficient in JavaScript, TypeScript, HTML, and CSS.
- Solid experience with Next.js for SSR and SSG.
- Knowledge of micro-frontend architectures and modular frontend design.
- Hands-on experience with design systems and building reusable UI components.
- Experience working with CI/CD pipelines and tools such as GitLab CI/CD, Jenkins, or GitHub Actions.
- Skilled in writing and maintaining tests with Jest, React Testing Library, and pact.io.
- Experience deploying to AWS Lambda, Amplify, and other serverless environments.
- Familiarity with monitoring and logging tools like NewRelic, Datadog, and ELK.
- Experience with headless CMS platforms (e.g., ContentStack) and digital experience platforms (e.g., Uniform).
- Integration experience with e-commerce platforms like CommerceTools.
- Strong understanding of state management, React hooks, and component lifecycles.
- Familiarity with GraphQL and RESTful APIs.
- Knowledge of accessibility (a11y) standards and best practices.
- Comfortable working in Agile/Scrum environments.
- AWS Certified Developer – Associate certification is a plus.
Working Conditions:
- Type of job: Temporary Contractor – 1 year with the possibility to extend
- Work hours: Monday - Friday, 40 hours per week
- Location: Toronto, ON
Top Skills
Aws Amplify
Aws Lambda
Ci/Cd
Commercetools
Contentstack
CSS
Datadog
Elk
Github Actions
Gitlab Ci/Cd
GraphQL
HTML
JavaScript
Jenkins
Jest
Newrelic
Next.Js
Pact.Io
React Testing Library
React
Restful Apis
Typescript
Uniform
Similar Jobs
Digital Media • Information Technology
Develop scalable e-commerce frontend applications using React and Next.js. Requires strong design system expertise, mentoring, and CI/CD management.
Top Skills:
AWSCi/CdCommercetoolsContentstackCSSDatadogElkGithub ActionsGitlabGraphQLHTMLJavaScriptJenkinsJestNewrelicNext.JsPactReact Testing LibraryReactRestTypescriptUniform
Digital Media • Gaming • Information Technology • Software • Sports • Esports • Big Data Analytics
As QA Manager, you'll lead the QA engineering team, develop and improve QA processes, and ensure product quality through effective testing strategies and mentoring.
Top Skills:
Automation TechniquesCross-Functional CollaborationMetrics TrackingQa ProcessesTest Strategy
.png)
Cloud • Insurance • Payments • Software • Business Intelligence • App development • Big Data Analytics
The Software Engineer will build integrations, support feature delivery, solve technical problems, and participate in design and code reviews within an Agile team.
Top Skills:
ConfluenceGoJavaJIRAPostgresReactTypescript
What you need to know about the Los Angeles Tech Scene
Los Angeles is a global leader in entertainment, so it’s no surprise that many of the biggest players in streaming, digital media and game development call the city home. But the city boasts plenty of non-entertainment innovation as well, with tech companies spanning verticals like AI, fintech, e-commerce and biotech. With major universities like Caltech, UCLA, USC and the nearby UC Irvine, the city has a steady supply of top-flight tech and engineering talent — not counting the graduates flocking to Los Angeles from across the world to enjoy its beaches, culture and year-round temperate climate.
Key Facts About Los Angeles Tech
- Number of Tech Workers: 375,800; 5.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Snap, Netflix, SpaceX, Disney, Google
- Key Industries: Artificial intelligence, adtech, media, software, game development
- Funding Landscape: $11.6 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Strong Ventures, Fifth Wall, Upfront Ventures, Mucker Capital, Kittyhawk Ventures
- Research Centers and Universities: California Institute of Technology, UCLA, University of Southern California, UC Irvine, Pepperdine, California Institute for Immunology and Immunotherapy, Center for Quantum Science and Engineering
